3-Bromo-4H-quinolizin-4-one CAS 1871-13-2
| CAS No. | 1871-13-2 |
| Molecular Formula | C9H6BrNO |
| Molecular Weight | 224.05 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 3-Bromo-4H-quinolizin-4-one meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
3-Bromo-4H-quinolizin-4-one (CAS 1871-13-2), molecular formula C9H6BrNO and molecular weight 224.05 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 3-Bromo-4H-quinolizin-4-one (C9H6BrNO) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C9H6BrNO |
| Molecular Weight | 224.05 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
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Recommended Standards
- 3-Acetyl-4-bromobenzonitrile (CAS 1822653-33-7)
- 5-Bromoisoquinolin-1(2H)-one (CAS 190777-77-6)
- 4-Bromoquinolin-7-ol (CAS 181950-60-7)
- 4-Bromo-5-fluorothiophene-2-carboxamide (CAS 1956318-37-8)
- 2-[4-(3,3-dimethylbutanamido)phenyl]acetic acid (CAS 954566-80-4)
- (6-Amino-5-chloro-2-(difluoromethyl)pyridin-3-yl)methanol (CAS 1804450-97-2)
- 3-(Isobutylthio)aniline (CAS 91330-04-0)
- Dobutamine Impurity 29 (CAS CATO-C4X-129829)
- 3-Bromo-1H-indol-5-ol (CAS 1558282-62-4)
- 7-Bromo-3,5-difluoroquinolin-2-amine (CAS 2410639-79-9)
- 2-(Chloromethyl)-3-(difluoromethyl)-4-methoxy-5-nitropyridine (CAS 1806863-44-4)
- Voriconazole Impurity 58 (CAS CATO-C4X-136658)
- Loxoprofen Impurity 61 (CAS CATO-C4X-148861)
- Tirzepatide Impurity 38 (CAS CATO-C4X-324038)
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